seized the defiles north of the canal of the Marne and the Rhine,
and reached Saarburg. Here a connection was established with the
army of Lorraine, which had commenced its operations on the 14th.
A violent battle ensued, known under the name of the Battle of
Saarburg. The left wing of the French army attacked August 19, 1914;
it hurled itself at the fortified positions, which were copiously
fringed with heavy artillery. In spite of the opposition it made
progress to the northwest of Saarburg.

On the 20th the attack was renewed, but from the beginning it was
evident that it could not succeed and that the duty intrusted to
the Eighth Army Corps of opening up the way for the cavalry corps
could not be accomplished. This army corps had gone through a trying
ordeal as a result of the bombardment by the heavy German artillery
established in fortified positions, covering distances all measured
in advance, with every group and French battery presenting a sure
target and the action of the French cannon rendered useless.

If the left wing of the First Army found itself checked, the center
and the right on the other hand were in an excellent position and
were able to advance. But at this point (August 21, 1914) the Second
French Army (the army of Lorraine) met a serious reverse in the
region of Morhange and was compelled to retreat. This retreat left
the flank of the First Army gravely unprotected, and as a consequence
this army was also obliged to fall back. This rear-guard movement
was accomplished over a very difficult piece of country down to
the Baccarat-Ban de Sapt-Provenchère line, south of the Col du
Bonhomme. It was found necessary to abandon the Donon and the Col
de Sapt.